I’m not a welder but pretty sure you can. However - I’d think about how the heat will affect the rest of the unit. I had a chunk break off a plate on my 150. Made a patch out of 1/8 plate and used rivets to attach. Even better if you have the broken piece to mend back in.

At the boatyard I work for, we send lower units to our local prop shop (New England Propeller) all the time for welding repair.
From the cav plate to the skeg. No problem.
Once or twice even for repair around the bearing carrier.
They even paint them! Just need to drain the oil first.
If somethings too far gone, they let us know.

My father dose T-tops and towers at a boat place and has done tons of skeg repairs. It can be easily done. Trick is to not get it too hot and to be able to weld threw the oils. Aluminum is tricky to weld to start with and cast even harder. Oil soaked cast way harder. A good AC welder or Me personally I would feel safe to weld that peice up no problem. Some people may not want to try. Take it to some one who knows how to do oil soaked castings and you will have no issues. Most use 4043 filler wire to do cast but the newer 4047 will be the best as it has a lower melting point and can wet in with out boiling out all the oils. Preheat helps, acetone and a good cleaning. If the welder knows what 4047 filler is he will be your guy. lol


If you were closer I would put it back on for you but in your area there should be some experienced guys

Lil up the road but can recommend Scott at Aim Alloy welding in Ft Lauderdale just north of Davie Blvd and 441 for skeg and almost any welding repairs, fix’s a lot off airplane cylinders for the airboaters as well

Thanks I'm going to call him

Mine is welded not much below the gearcase. A Keys motor, I was told. It holds pressure well after 10 years.

Absolutely you can done it before

strick